Given below are two statements: one is labelled as Assertion A and the other…
2023
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: I/O protection is ensured by a hardware trap
Reason R: I/O interrupt is caused by conditions like I/O completion and device malfunction occurring within the I/O devices
In the light of the above statements, choose the correct answer from the options given below.
- A.
Both A and R are true and R is the correct explanation of A
- B.
Both A and R are true but R is NOT the correct explanation of A
- C.
A is true but R is false
- D.
A is false but R is true
Attempted by 128 students.
Show answer & explanation
Correct answer: D
Assertion A is false: I/O protection is ensured using privileged instructions and mode bits, not by hardware traps.
Reason R is true: I/O interrupts are generated due to events like I/O completion or device malfunction.
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